To signup use the Signup button on the home screen. You'll be redirected to a page where you have to enter your basic information such as name, last name, email address, password etc. After finishing that you'll get a verification email, you can click that to verify your identity.

In the suggestion page, you'll see different profiles that you can click on and if you want to talk more with the user, you can click on Connect option. After that, the person on the opposite side will get will get a notification. Once they accept you as a connection, you'll be able to chat with that user.

You have full control over your data & you can delete it whenever you want. If you want to close your account / delete your data, you can go to your profile & then tap on Deactivate my account option. That will delete your entire data within 24hrs.